11-19-2005
Hi Richard,
The tar command can be used to reproduce a directory tree with all the ownership and permissions preserved (though arbitary preserved ownership is only possible if you untar as root).
By combining with the find and xargs command it is possible to tar a directory tree with none of the files in it saved.
To make the compacted tree, use this command from the directory root you want to copy the tree from...
find . -type d -print0 | xargs -0 tar -f tree.tgz --no-recursion -zpc
This creates a file called tree.tgz. Copy this file to the directory you want to copy the tree to then just type...
tar zxf tree.tgz
I recommend testing this in an empty directory before letting it loose on a source tree just to make sure it creates the tree in the way you expect e.g. at the right directory level.
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fileutil::magic::cgen(n) file utilities fileutil::magic::cgen(n)
__________________________________________________________________________________________________________________________________________________
NAME
fileutil::magic::cgen - Generator core for compiler of magic(5) files
SYNOPSIS
package require Tcl 8.4
package require fileutil::magic::cgen ?1.0?
package require fileutil::magic::rt ?1.0?
package require struct::tree
package require struct::list
::fileutil::magic::cgen::2tree script
::fileutil::magic::cgen::treedump tree
::fileutil::magic::cgen::treegen tree node
_________________________________________________________________
DESCRIPTION
This package provides the generator backend for a compiler of magic(5) files into recognizers based on the fileutil::magic::rt recognizer
runtime package. For the compiler frontend using this generator see the package fileutil::magic::cfront.
COMMANDS
::fileutil::magic::cgen::2tree script
This command converts the recognizer specified by the script into a tree and returns the object command of that tree as its result.
It uses the package struct::tree for the tree.
The script is in the format specified by magic(5).
::fileutil::magic::cgen::treedump tree
This command takes a tree as generated by ::fileutil::magic::cgen::2tree and returns a string encoding the tree for human consump-
tion, to aid in debugging.
::fileutil::magic::cgen::treegen tree node
This command takes a tree as generated by ::fileutil::magic::cgen::2tree and returns a Tcl script, the recognizer for the file types
represented by the sub-tree rooted at the node. The generated script makes extensive use of the commands provided by the recognizer
runtime package fileutil::magic::rt to perform its duties.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category fileutil
:: magic of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may
have for either package and/or documentation.
SEE ALSO
file(1), fileutil, magic(5)
KEYWORDS
file recognition, file type, file utilities, mime, type
CATEGORY
Programming tools
fumagic 1.0 fileutil::magic::cgen(n)